Editing Maritime archaeology (section)

===Equipment and procedures===
{{See|Underwater archaeology#Techniques}}
*Position fixing of the site datum. Various methods were used historically, but DGPS is relatively accurate and available.
*Site survey and mapping, and recording of artifact positioning relative to a datum. This may be done manually or with the aid of high resolution multibeam sonar and photogrammetry
*[[Underwater archaeology#Excavation|Excavation]]:
**[[Manual excavation]].
**Use of [[airlift dredge]]s
**[[Fluid power|Hydraulic power]]ed [[Suction dredger|suction dredge]]s to remove silt lifted by fanning, to be deposited downcurrent.<ref name="Gambin 2023" />
**Silt and [[sand blower]]s can be useful if the current removes the lifted material before it settles, but must be used with discretion as artifacts may be entrained in the flow if it is too strong.
*[[Underwater archaeology#Recording|Recording]]
*[[Underwater archaeology#Artifact recovery and conservation|Artifact recovery and conservation]].
Relatively recent developments, mainly for special circumstances:
*[[First person point of view]] video recordings by each diver keep continuous record of work done.<ref name="Gambin 2023" />
*Daily [[photogrammetry]] to record state of site in detail, stratigraphy, and for dive planning.<ref name="Gambin 2023" />
*[[360° camera]]s.<ref name="Gambin 2023" />
*[[Diving rebreather]]s.<ref name="Gambin 2023" />
*[[Saturation diving]],<ref name="Clancy 2013" />
*[[Atmospheric diving suits]]<ref name="Exosuit" />